Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4336477 | Spark plug | — | 1982-06-22 |
SY
Shigeyasu Yamada
Overall (1982): #30,868 of 81,411Top 40%
1
Patents 1982